19 1 2 1 Article 1 COVID 1 CoV 1 SARS 1 SARS-CoV-2 vaccine 1 allocative efficiency 1 antibody response 1 antibody titer 1 clinical decision making 1 coronavirus disease 2019 1 coronavirus spike glycoprotein 1 cross human 1 immunoglobulin 1 immunosurveillance 1 infection fatality rate 1 limit of detection 1 neutralizing antibody 1 nonhuman 1 nucleocapsid protein 1 sectional 1 seroprevalence 1 severe acute respiratory syndrome 1 vaccination 1 vaccination coverage 1 vaccines 1 virus attenuation 1 virus neutralization 1